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Copying a SCREEN$ in ZX BASIC in 1 second?!Following on from the revived "[thread=20207]Saving a complete SCREEN$ in BASIC[/thread]" thread (although Arjun really only needed a suitable POKE i…
Here's an updated version of FN m$() which handles string slicing in both destination & source. It's a ... [b]bit[/b] longer than before, but half of it is comments, examples, definitions and setup. Using the function just requires one line, as before ... -
Storing and displaying attributes...Hi Folks, I have a requirement to store and then redisplay a line of attributes from the screen. For example: 100 DIM a$(1,32) 110 LET line=10 120…
... the pseudo-string in the DEFADD workspace must have been addressing ... -
Storing and displaying attributes...Hi Folks, I have a requirement to store and then redisplay a line of attributes from the screen. For example: 100 DIM a$(1,32) 110 LET line=10 120…
... works) is to reset the DEFADD system variable to zero before ... -
checking bits in BASICThe question of manipulating bit patterns in BASIC was raised recently in this [thread=35728]Keys redefine routine and key check[/thread] thread. I s…
... br /> 2a0b5c LD HL,(5c0b) ; DEFADD
010400 LD BC,0004 ... RET
[/CODE]
DEFADD is the address of arguments ... evaluated; otherwise 0.
DEFADD+04 is the value of ... the integer b passed
DEFADD+04+24 is the address ... -
checking bits in BASICThe question of manipulating bit patterns in BASIC was raised recently in this [thread=35728]Keys redefine routine and key check[/thread] thread. I s…
... all variables are vectorized from DEFADD and because the thread begun ... -
INSTR function...Hi Folks, Another little program that people might find useful: [CODE]100 DIM i(4) 110 LET a$="This is some sample text" 120 LET b$="text" 130 GO S…
... /> 5b00 dd2a0b5c LD IX,(5c0b) ; DEFADD
5b04 010000 LD BC ... -
INSTR function...Hi Folks, Another little program that people might find useful: [CODE]100 DIM i(4) 110 LET a$="This is some sample text" 120 LET b$="text" 130 GO S…
... the VARS area rather than DEFADD and there they are not ... -
AND,XOR,OR,BIT,RES,SET,CPL,NEG,RLC,RRC,SLA,SRL,RL, RR,SRA for BASICAs this was drifting away from the original INKEY$ thread I thought that I'd create a new one. So here's a routine to provide all of the above mentio…
... />
;Variables del sistema
DEFADD equ 5c0bh
;Tokens ... /> Main proc
ld hl,(DEFADD)
inc hl
inc ... -
AND,XOR,OR,BIT,RES,SET,CPL,NEG,RLC,RRC,SLA,SRL,RL, RR,SRA for BASICAs this was drifting away from the original INKEY$ thread I thought that I'd create a new one. So here's a routine to provide all of the above mentio…
... pick up parameters from the DEFADD area simplifies the syntax, as ... -
DATA vs PRINT and OVERjust messing about and came across this alternative way of drawing a map....now before I start mucking about with my actual program.....is there any …
... the DATA and using a DEFADD (PEEK 23563+256*PEEK 23564 ... quicker, as the ROM checks DEFADD for variables before it checks ... -
stuck on recursive functionI want this function to PEEK 'l' bytes from memory starting at 's' and return them as a string, but however much I fiddle about with quoting and pare…
... each iteration creates a new DEFADD area for its version of ... -
Copying a SCREEN$ in ZX BASIC in 1 second?!Following on from the revived "[thread=20207]Saving a complete SCREEN$ in BASIC[/thread]" thread (although Arjun really only needed a suitable POKE i…
... memory anywhere as long as DEFADD points to that address? If ... -
Copying a SCREEN$ in ZX BASIC in 1 second?!Following on from the revived "[thread=20207]Saving a complete SCREEN$ in BASIC[/thread]" thread (although Arjun really only needed a suitable POKE i…
... />
Using a separate DEFADD area to hold single letter ... assignments won't work but DEFADD variables will still be ... searched first by LOOK_VARS when DEFADD is non-zero.
... subscripted, as SCANNING deals with DEFADD variables differently and doesn't ... -
Copying a SCREEN$ in ZX BASIC in 1 second?!Following on from the revived "[thread=20207]Saving a complete SCREEN$ in BASIC[/thread]" thread (although Arjun really only needed a suitable POKE i…
... />
Using a separate DEFADD area to hold single letter ... assignments won't work but DEFADD variables will still be ... searched first by LOOK_VARS when DEFADD is non-zero.
... subscripted, as SCANNING deals with DEFADD variables differently and doesn't ... -
Poking a string to memory...I'm looking to poke a string of characters including colour control codes to memory, I'm currently doing it by hand: 16,2,19,1,22,1,1,144 That equa…
Looks like another job for the DEFADD trick. I'll leave PC to answer this one, as I haven't had my breakfast yet, and there might be a simpler method which a lack of Cheerios is concealing from me. -
Poking a string to memory...I'm looking to poke a string of characters including colour control codes to memory, I'm currently doing it by hand: 16,2,19,1,22,1,1,144 That equa…
... we need to alter the DEFADD (23563 & 23564) system variable ... an empty string and the DEFADD system variable to its default ... -
Poking a string to memory...I'm looking to poke a string of characters including colour control codes to memory, I'm currently doing it by hand: 16,2,19,1,22,1,1,144 That equa…
... /> The four bytes in the DEFADD area used for the location ... 50000 of 1000 bytes the DEFADD workspace values would be:
Copying a SCREEN$ in ZX BASIC in 1 second?!Following on from the revived "[thread=20207]Saving a complete SCREEN$ in BASIC[/thread]" thread (although Arjun really only needed a suitable POKE i…
... 63785. I then simply set DEFADD to point to this memory ...New project: CargandoLeches. Ultraloads with ROMHi This project has started months ago, between decicoder, macleod and me. Uses the best modulation of k7zx (throwing shavings). But this ultraloa…
... programs into a tape. "CargandoLeches" codification don't support tapes.
New project: CargandoLeches. Ultraloads with ROMHi This project has started months ago, between decicoder, macleod and me. Uses the best modulation of k7zx (throwing shavings). But this ultraloa…
... programs into a tape. "CargandoLeches" codification don't support tapes.
BASin v.15 DEF FN bugThe bug would appear to be in "BASSupport.pas : Procedure ProcessDEFFN"; as it's not inserting the 6-byte variable place holder after each parameter …
... error" when called because the DEFADD variables area for the FN ...BASin v.15 DEF FN bugThe bug would appear to be in "BASSupport.pas : Procedure ProcessDEFFN"; as it's not inserting the 6-byte variable place holder after each parameter …
... error" when called because the DEFADD variables area for the FN ...simplest method to pass a string to m/code?The statement "RANDOMIZE numvar+USR mc" is a simple way of passing a single numeric parameter to a m/c routine, as mc can retrieve numvar from the to…
... ]
The address of DEFADD will point to the parameters ...Screen2StringFurther to writing that BASIC one-liner to redirect CAT to a string I thought that I'd do a general redirection routine for anything which normally p…
... $ string definition pointed to by DEFADD.
I've a ...Need to scroll one column using m.c.I've used many of the available routines to scroll the entire screen in any direction, but I'm not being able to find one that would allow me to scro…
... /> SL2: ld ix,(23563) ;IX=(DEFADD)
NEXTROW:ld b ...number padding functionI wrote a number padding function in BASIC a while ago, but when I came to want it again I couldn't find it, so I've done this enhanced [url=http://w…
... /> PADNUM: ld hl,(23563) ;HL=(DEFADD)
push hl
inc ... ;STK_FETCH
pop ix ;IX=(DEFADD)
ld a,"E"
question re. STR$ bugCould someone point me to whereabouts in the ROM this goes wrong? [code]PRINT PAPER 5;1;STR$ 234[/code] (Only the "1" prints in cyan.) It's not the m…
This routine (48 bytes) provides a BASIC replacement for STR$ which fixes those two bugs; use "FN s$(numeric_expression)" instead of "STR$ numeric_expression". I copied the ROM's method used in CIRCLE & DRAW for checking -1General purpose full screen input routineHi Folks, One of the things that annoyed me back in the 1980s with most BASICs was the lack of a full screen "formatted" input function. You could …
... are using the DATADD and DEFADD system variables here. Can you ...General purpose full screen input routineHi Folks, One of the things that annoyed me back in the 1980s with most BASICs was the lack of a full screen "formatted" input function. You could …
... are using the DATADD and DEFADD system variables here. Can you ...
